Forget a box of chocolates and a dozen roses. When it comes to attracting a mate, the male sagebrush cricket brings a special nuptial gift to his partner. During copulation, these insect Romeos offer their Juliets a peculiar food gift: females chew off the ends of the males’ fleshy hind wings and ingest fluid that is seeping from the wounds they inflict.
However, once males have endured this "love bite," their chances of finding another partner are slim because they lack the energy to aggressively pursue other mates. It’s a classic case of sexual exhaustion. Why do the males permit females to wreak such damage on them during mating?
McMaster University psychologist Andrew Clark, who studied the crickets in co-operation with researchers from Illinois State University, says, "The primary benefit to males appears to be that wing feeding keeps the female occupied during the time it takes the male to transfer the sperm."
Julia Thomson | EurekAlert!
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For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
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Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
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Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.
Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...
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